Fish & Aquariums

fish & aquariums — pre-owned

11,602listings

Browse 11,602 fish & aquariums — pre-owned on eBay — listings updated every few minutes. All items are pre-owned and sold by eBay sellers directly.

Neptune Systems Apex EB832 Energy Bar 832 Power Bar
UsedBuy It Now

Neptune Systems Apex EB832 Energy Bar 832 Power Bar

EB832 Energy Bar unit shown in photos. No Aquabus cable, Apex base unit, probes, modules, mounting hardware, original box, manual, or other accessories are included unless shown. Attached power cord shown in photos.

$240.00
+$9.95Chicago, US
louisparks
Feedback
100.0%Excellent· 90
View on eBayOpen listing →
Vintage Old 80s 90s Aquarium 2 Hobo's Fishing - Fish Bowl Stand & Green Fishbowl
UsedBuy It Now

Vintage Old 80s 90s Aquarium 2 Hobo's Fishing - Fish Bowl Stand & Green Fishbowl

Up for sale is this very cool bronze colored Fishbowl stand complete with green fishbowl. The two hobo guys sitting on the cliff with the fishing pole comes apart for easy shipping and cleaning. It's made of resin so probably dates to the 1980s or maybe early 90s. It's definitely a beautiful piece. The bowl measures about 5 inches wide and the green vintage color makes it very eye-catching. The entire piece measures about 11 inches tall. I hope someone can use this. Thank you for looking.

$275.00
+$46.75Phoenix, US
larike4
Feedback
100.0%Excellent· 2.0k
View on eBayOpen listing →
Vintage Sternco Metal Frame Fish Tank 20” Glass Bottom Aquarium
-10%
UsedBuy It NowBest Offer

Vintage Sternco Metal Frame Fish Tank 20” Glass Bottom Aquarium

Not much is known about this sold completely as is.

$360.00$400.00-10%

You save $40.00

+$100.00Palmyra, US
koaliteas97
Feedback
98.1%Excellent· 2.1k
View on eBayOpen listing →
Reefbreeders Meridian 63 LED - Shallow Reef
UsedBuy It NowBest Offer

Reefbreeders Meridian 63 LED - Shallow Reef

In these areas, the light has a balanced blend of whites, blues, and violets that makes coral color and structure stand out in a natural way. Adjusting these channels lets you match the subtle shifts seen in real shallow reefs without pushing the spectrum toward an overly blue or overly white look.

$1000.00
See listingMount Juliet, US
docs_corals
Feedback
100.0%Excellent· 17
View on eBayOpen listing →
Super Rare Live rocks Live Rocks Marine Saltwater Fish Tank Aquarium Reef U-PICK
UsedBuy It Now

Super Rare Live rocks Live Rocks Marine Saltwater Fish Tank Aquarium Reef U-PICK

Live Rocks are available that are coming directly from saltwater fish tanks that have been running for many years. All natural rock which can make them easy to stack when creating a base for growing live coral or as an addition to existing coral-based ecosystems.

$249.00
+$24.95El Cajon, US
petcrownproducts
Feedback
99.9%Excellent· 933
View on eBayOpen listing →
Live Duckweed Aquarium Floating Plant Fast Growing & Healthy
UsedBuy It Now

Live Duckweed Aquarium Floating Plant Fast Growing & Healthy

LIVE DUCKWEED. Healthy, vibrant duckweed harvested from established freshwater aquariums. Duckweed is one of nature’s most effective floating plants. ✔ May assist in reducing algae growth. ✔ Fast growing and easy to maintain.

$5.95
Free ShippingTampa, US
c1gar-c1ty-n1nja
Feedback
100.0%Excellent· 120
View on eBayOpen listing →
Aquarium Net for Fish 8" Net 21" long used condition
UsedBuy It Now

Aquarium Net for Fish 8" Net 21" long used condition

The aquarium net for fish is an essential tool for maintaining and caring for fish in all water types. Made in China, this net is 8" in size with a 21" long handle, making it perfect for reaching into the aquarium to safely scoop out fish for feeding or to clean up the tank.

$14.00
See listingAvon Lake, US
eliotchar-95
Feedback
100.0%Excellent· 534
View on eBayOpen listing →
VIPARSPECTRA Timer Control 165W LED Aquarium Light Full Spectrum Reef Coral Tank
-79%
UsedBuy It Now

VIPARSPECTRA Timer Control 165W LED Aquarium Light Full Spectrum Reef Coral Tank

Specifications: - Dimensions: 16x8.5x2.4 inches - Item Weight: 6.8 lbs - One light is ideal for 24x24" coverage - Max Coverage at 12" height: 30x24" - Coreverage at 12" height: 24x24". - Avg. Power Draw: 105W±3% - (55pcs) High Intensity 5Watt Bridgelux/Epileds LED Chips - Channel one: Violet(420nm), Royal Blue(450nm), Blue(470nm) - Channel two: Green(520nm), Red(660nm), Neutral White(6500K), Cool White(12000K) - LEDs Angle: 90° - Frequency: 50-60Hz - Input: AC100-240V - Lifespan: 100,000 hours - Warranty: 1 year US warranty.

$114.99$547.57-79%

You save $432.58

Free ShippingRichmond, US
viparspectra
Feedback
99.6%Excellent· 16.5k
View on eBayOpen listing →
Ecotech Radion XR30 G6 PRO LED with High Intensity Lens Kit & Mounting Slide
UsedBuy It NowBest Offer

Ecotech Radion XR30 G6 PRO LED with High Intensity Lens Kit & Mounting Slide

Ecotech Radion XR30 G6 PRO LED with High Intensity Lens Kit & Mounting Slide I do not have the original Lens Kit, these come with the high intensity upgrade (as well as the mounting slide)

$599.00
+$15.00Los Angeles, US
google_frank
Feedback
100.0%Excellent· 203
View on eBayOpen listing →
Neptune Systems Apex A3 Base Unit Aquarium Controller
UsedBuy It Now

Neptune Systems Apex A3 Base Unit Aquarium Controller

Apex A3 base unit shown in photos. Orange mounting bracket shown attached to the unit. Ports and product label are shown in the photos.

$367.00
+$9.95Chicago, US
louisparks
Feedback
100.0%Excellent· 90
View on eBayOpen listing →
Seneye Reef Aquarium Monitor PAR LUX Kelvin Meter w/ Holder
UsedBuy It Now

Seneye Reef Aquarium Monitor PAR LUX Kelvin Meter w/ Holder

No Seneye slides, Seneye Web Server, software account, subscription, original box, manual, or other accessories are included unless shown. Seneye USB device shown in photos. Light sensor window, USB cable, back icons, holder, and rods/accessories are shown in photos.

$145.00
+$9.95Chicago, US
louisparks
Feedback
100.0%Excellent· 90
View on eBayOpen listing →
Neon Green Star Polyps Live Soft Coral GSP Frag ***LOWEST PRICE W/SHIPPING***
UsedBuy It Now

Neon Green Star Polyps Live Soft Coral GSP Frag ***LOWEST PRICE W/SHIPPING***

The GSP colony pictured has been growing for 13 years in my system.

$14.00
+$13.90Rocklin, US
silverperfection
Feedback
99.3%Excellent· 606
View on eBayOpen listing →
AquaIllumination AI Axis 40 Centrifugal Pump w/ Controller
UsedBuy It Now

AquaIllumination AI Axis 40 Centrifugal Pump w/ Controller

AquaIllumination AI Axis 40 centrifugal pump for aquarium use. AI Axis 40 pump shown in photos.

$86.00
+$9.95Chicago, US
louisparks
Feedback
100.0%Excellent· 90
View on eBayOpen listing →
Coralvue HYDROS WaveEngine LE
UsedBuy It NowBest Offer

Coralvue HYDROS WaveEngine LE

The Coralvue HYDROS WaveEngine LE is a cutting-edge aquarium accessory designed to create realistic water flow patterns and ocean currents in fish tanks. This innovative device from Coralvue simulates natural marine waves to provide a more immersive and realistic environment for fish and other aquatic animals. The HYDROS WaveEngine LE model is equipped with advanced technology to generate precise water movement, enhancing the overall aesthetics and health of aquarium ecosystems. Ideal for aquarium enthusiasts looking to create a more lifelike underwater environment for their fish. Waveengine LE controller only. Icecap 2k adapter cables not included.

$200.00
See listingWindsor, US
brlbra_gzzjrfd
Feedback
100.0%Excellent· 34
View on eBayOpen listing →
Premium 15g Rimless Aquascape complete setup w/ Stand & Mature Aquatic Livestock
UsedBuy It NowBest Offer

Premium 15g Rimless Aquascape complete setup w/ Stand & Mature Aquatic Livestock

Stand with storage. Water test kit. All food/everything necessary for the tank will also be provided! Pretty much everything inside the cabinet.

$300.00
See listingDallas, US
marumando
Feedback
100.0%Excellent· 12
View on eBayOpen listing →
Waterbox 20 gallon AIO Full Aquarium
UsedBuy It Now

Waterbox 20 gallon AIO Full Aquarium

I ran the tank for maybe 6 months and since it's just been sitting, apologies in advance for the tank being dirty, I'll clean before pickup. Everything in the pictures is included -Waterbox 20 AIO tank.

$475.000
See listingKerrville, US
smworldclasstrading
Feedback
100.0%Excellent· 228
View on eBayOpen listing →
Reef Octopus Octo Classic BH-1000 Hang On the Back Protein Skimmer 125 Gallon
UsedBuy It Now

Reef Octopus Octo Classic BH-1000 Hang On the Back Protein Skimmer 125 Gallon

$259.99
Free ShippingBakersfield, US
noob_ihack
Feedback
100.0%Excellent· 116
View on eBayOpen listing →
Tunze ATO automatic top off
UsedBuy It NowBest Offer

Tunze ATO automatic top off

The Tunze ATO automatic top off system is designed to automatically replenish water in aquarium tanks to maintain ideal water levels. The system is compatible with the Tunze Osmolator nano model, ensuring precise water addition for optimal aquarium conditions. This product is essential for aquarium owners looking to automate their water management tasks to create a more efficient and reliable environment for their fish and other aquatic pets.

$49.99
See listingSalt Lake City, US
mamat-ke-zjex5q1
Feedback
100.0%Excellent· 7
View on eBayOpen listing →
Neptune Systems Apex Trident Mini 3D Printed Case Space Saving Design Reef Tank
UsedBuy It NowBest Offer

Neptune Systems Apex Trident Mini 3D Printed Case Space Saving Design Reef Tank

Neptune Systems Apex Trident Mini 3D Printed Case Space Saving Design Reef Tank

$100.00
Free ShippingBoca Raton, US
marcelg928
Feedback
100.0%Excellent· 447
View on eBayOpen listing →
AQUANEAT LED Aquarium Light Multi-Color Full Spectrum 48” Fish Tank Light(USED)
-10%
UsedBuy It Now

AQUANEAT LED Aquarium Light Multi-Color Full Spectrum 48” Fish Tank Light(USED)

Adjustable mounting brackets for flexibility in 48”-54” aquarium widths. Light body without docking brackets: 46” L x 2.7” W. Tank thickness: No limit to rim size. Splash guard (not waterproof). Two Mode :All lights on and All lights off.

$25.19$27.99-10%

You save $2.80

Free ShippingMadison, US
cll_petsupplies
Feedback
99.7%Excellent· 293.9k
View on eBayOpen listing →
Rare Live rocks Live Rocks Marine Saltwater Fish Tank Aquarium Reef YOU PICK
UsedBuy It Now

Rare Live rocks Live Rocks Marine Saltwater Fish Tank Aquarium Reef YOU PICK

Live Rocks are available that are coming directly from saltwater fish tanks that have been running for many years. All natural rock which can make them easy to stack when creating a base for growing live coral or as an addition to existing coral-based ecosystems.

$149.00
+$24.95El Cajon, US
petcrownproducts
Feedback
99.9%Excellent· 933
View on eBayOpen listing →
Aqua Illumination Hydra 32 HD LED Reef Light - Black - Used
UsedBuy It Now

Aqua Illumination Hydra 32 HD LED Reef Light - Black - Used

This Aqua Illumination Hydra 32 HD LED fixture is used and in excellent condition. The Hydra 32 HD is a powerful reef aquarium light designed for improved efficiency, clean aesthetics, and excellent spread throughout your aquarium.

$267.99
See listingChanhassen, US
northernreefs
Feedback
99.0%Excellent· 194
View on eBayOpen listing →
Neptune Systems LD-3 Optical Multi-Surface Leak Sensor for Apex
UsedBuy It Now

Neptune Systems LD-3 Optical Multi-Surface Leak Sensor for Apex

Neptune Systems LD-3 leak sensor shown in photos. Top housing, cable, plug, and bottom sensor surface are shown in photos.

$39.00
+$9.95Chicago, US
louisparks
Feedback
100.0%Excellent· 90
View on eBayOpen listing →
Neptune System EB832 Energy Bar 832 - FOR PARTS / AS IS - READ
UsedBuy It Now

Neptune System EB832 Energy Bar 832 - FOR PARTS / AS IS - READ

Can't say for sure though. However my loss (and lack of knowledge) is your gain. Issue: Unsure the exact cause. This did not work when I got it. When plugged in theEnergy Bar 832 does not turn on.

$84.99
See listingScranton, US
priceilike
Feedback
100.0%Excellent· 842
View on eBayOpen listing →
Orphek Natura Icon LED Lighting for Stunning Reef Aquariums
UsedBuy It NowBest Offer

Orphek Natura Icon LED Lighting for Stunning Reef Aquariums

The Orphek Natura Icon LED Lighting is designed specifically for stunning reef aquariums, featuring a sleek rectangular shape in a combination of black and silver colors. This model utilizes energy-efficient Light Emitting Diode (LED) technology, providing a bright and efficient light source for your underwater ecosystem.

$550.00
See listingZephyrhills, US
lucky-5029
Feedback
100.0%Excellent· 32
View on eBayOpen listing →
Lot of 4 - Vintage  Japanese Pagodas  Castle Arch - Aquarium Fish Tank Decor
UsedBuy It NowBest Offer

Lot of 4 - Vintage Japanese Pagodas Castle Arch - Aquarium Fish Tank Decor

This is a lot of 4 vintage Japanese pagodas made of ceramic, featuring a multicolor design. These pagodas are perfect for decorating aquarium fish tanks, adding an elegant and unique touch to the underwater environment. Originating from Japan, these pieces bring a touch of traditional Japanese architecture and aesthetics to any aquarium setup. After sourcing; all of our items are stored in a clean, smoke-free environment. We accept returns within 30 days, buyer to pay return shipping unless product is damaged or has a defect that is not disclosed. We are confident that you will enjoy your purchase, but if for any reason there is an issue, please contact us before leaving any negative feedback. Thank you !

$28.00
See listingHowell, US
gratefullygreen
Feedback
100.0%Excellent· 495
View on eBayOpen listing →
Frag Racks
UsedBuy It Now

Frag Racks

Used frags, three are extremely heavy duty and were used on half inch glass, they would probably work up to about three quarters of an inch thick glass. The other two were primarily used in a forty breeder

$100.00
See listingManchester, US
cward1971
Feedback
100.0%Excellent· 141
View on eBayOpen listing →
Neptune Systems LLS-15 15 Inch Liquid Level Sensor for Apex
UsedBuy It Now

Neptune Systems LLS-15 15 Inch Liquid Level Sensor for Apex

Neptune Systems LLS-15 liquid level sensor shown in photos. Scale markings, Neptune Systems logo, part number, connector end, and mount detail are shown in photos. No Apex base unit, FMM module, mounting hardware beyond what is attached, original box, manual, or other accessories are included unless shown.

$53.00
+$9.95Chicago, US
louisparks
Feedback
100.0%Excellent· 90
View on eBayOpen listing →
IceCap 2K Gyre Flow Pump Only
UsedBuy It NowBest Offer

IceCap 2K Gyre Flow Pump Only

The IceCap 2K Gyre Flow Pump is a high-quality aquarium pump designed for optimal water circulation in fish tanks. With a sleek black design and the model name IceCap 2K Gyre, this pump is designed for efficiency and style. As part of the pet supplies section, specifically for fish and aquariums, this pump is a must-have for maintaining a healthy and vibrant aquatic environment for your fish. Pump and hydros adapter cable.

$85.00
See listingWindsor, US
brlbra_gzzjrfd
Feedback
100.0%Excellent· 34
View on eBayOpen listing →
Coralife Aquarium HOB Salt Water reef DC-Controlled Skimmer (NO PUMP - READ!)
UsedBuy It Now

Coralife Aquarium HOB Salt Water reef DC-Controlled Skimmer (NO PUMP - READ!)

What you see is what you get. Body in condition.

$50.00
See listingScranton, US
priceilike
Feedback
100.0%Excellent· 842
View on eBayOpen listing →
Fish Tank with Wood Cabinet 40 Gallon Aquarium Stand
UsedBuy It NowBest Offer

Fish Tank with Wood Cabinet 40 Gallon Aquarium Stand

The Fish Tank with Wood Cabinet is a stylish and practical 40-gallon aquarium stand designed for rectangular tanks. The metal stan provides stability while the glass tank material allows for easy viewing of fish and other aquatic animals. This aquarium stand is suitable for all water types and has a tank width of 30 inches, making it ideal for a variety of fish tank setups. The addition of the wood cabinet adds a touch of elegance to the overall design, making it a perfect choice for any fish tank.

$200.00
See listingJacksonville, US
eugsinc-0
Feedback
100.0%Excellent· 13
View on eBayOpen listing →
Vintage Aquarium 3 Lot - Longlife Guppy Fish Food Can & 2 Guppy Price Lists 1960
UsedBuy It Now

Vintage Aquarium 3 Lot - Longlife Guppy Fish Food Can & 2 Guppy Price Lists 1960

Up for sale is this very rare Longlife brand Guppy Diet fish food container. This one is in very very nice condition as you can see from the pictures. It shows really well. It measures about 2 1/2" tall and has gorgeous graphics. This little group also comes complete with two price list from Golden State Aquatics where they were selling award-winning guppy strains from Champion breeders in the 1960s. This was wholesale to the stores. I hope someone can use this. Thank you for looking.

$85.00
See listingPhoenix, US
larike4
Feedback
100.0%Excellent· 2.0k
View on eBayOpen listing →
Free Media 265GPH / 370GPH / 525GPH External Aquarium Filter with Builtin Pump K
TOP
UsedBuy It Now

Free Media 265GPH / 370GPH / 525GPH External Aquarium Filter with Builtin Pump K

Maximum flow rate of 370GPH from built in pump. Advanced, high-performance features help ensure high water quality plus quick and easy routine filter maintenance. Removes organic film and debris from water surface.

$89.99
Free ShippingAtlanta, US
liailunTOP
Feedback
99.9%Excellent· 5.4k
View on eBayOpen listing →
ANTIQUE URANIUM FISH BOWL TANK HOLDER STAND CAST IRON GLASS  ART DECO Base
UsedBuy It NowBest Offer

ANTIQUE URANIUM FISH BOWL TANK HOLDER STAND CAST IRON GLASS ART DECO Base

For your consideration is a ANTIQUE URANIUM FISH BOWL TANK HOLDER STAND CAST IRON GLASS ART DECO Base. This thing is really cool. It does have a crack in the glass on the base. Other than that, it appears to be in good condition.

$749.00
+$59.00Lexington, US
gallaghers_antiques-and-more-fb
Feedback
100.0%Excellent· 2.7k
View on eBayOpen listing →
Neptune Systems SV-1 Solenoid Valve 24V DC for Apex
UsedBuy It Now

Neptune Systems SV-1 Solenoid Valve 24V DC for Apex

Neptune Systems SV-1 solenoid valve shown in photos. No Apex base unit, FMM module, tubing, mounting hardware, original box, manual, or other accessories are included unless shown. Label, cable, and push-fit valve fittings are shown in photos.

$33.00
+$9.95Chicago, US
louisparks
Feedback
100.0%Excellent· 90
View on eBayOpen listing →
Neptune Systems SV-1 Solenoid Valve 24V DC for Apex
UsedBuy It Now

Neptune Systems SV-1 Solenoid Valve 24V DC for Apex

Neptune Systems SV-1 solenoid valve shown in photos. No Apex base unit, FMM module, tubing, mounting hardware, original box, manual, or other accessories are included unless shown. Label, cable, and push-fit valve fittings are shown in photos.

$33.00
+$9.95Chicago, US
louisparks
Feedback
100.0%Excellent· 90
View on eBayOpen listing →
Hanna HI713 Phosphate LR Checker Colorimeter Kit - Expired Reagents
UsedBuy It Now

Hanna HI713 Phosphate LR Checker Colorimeter Kit - Expired Reagents

Hanna HI713 Phosphate Checker shown powered on. Reagents are expired. Expired reagents are included as pictured, but should be replaced for accurate testing. Checker powers on as shown in photo. Box label shows included chemical components expired 03/2024.

$49.00
+$9.95Chicago, US
louisparks
Feedback
100.0%Excellent· 90
View on eBayOpen listing →
(OPEN BOX) Aquasky (24"-36") Bluetooth Aquarium LED - Fluval
UsedBuy It Now

(OPEN BOX) Aquasky (24"-36") Bluetooth Aquarium LED - Fluval

Deep coverage - each individual LED casts 120° of illumination for wider, uniform lighting without dead spots. LEDs:42 (28 White, 14 RGB). Extendable range:24-36 in (61-91 cm). UPC :015561145329.

$49.99
+$5.99Gettysburg, US
saltwateraq
Feedback
99.5%Excellent· 60.5k
View on eBayOpen listing →
Lovely Top Hat Frog Fishbowl Holder  4x6 bottom plate 2gal Bowl Stand Gold Tone.
UsedBuy It NowBest Offer

Lovely Top Hat Frog Fishbowl Holder 4x6 bottom plate 2gal Bowl Stand Gold Tone.

This product is a vintage Lovely Top Hat Frog Fishbowl Holder made of cast iron with a gold color. It was manufactured in the United States during the period of 1900-1940. The holder features a 4x6 bottom plate and can support a 2-3 gallon bowl. Perfect for adding a touch of antique charm to any space, this unique item is a functional and decorative piece for collectors or those looking to add a one-of-a-kind item to their home. Of course it shows signs of wear consistent with age. It has one small spot where it chipped off paint. If you have questions or need more pictures feel free to ask. Thanks for looking, God Bless.

$249.00
+$18.00Fillmore, US
sheglows_365
Feedback
99.8%Excellent· 788
View on eBayOpen listing →
ReefLED 90 Adapter tray for Pendant/Max-S
UsedBuy It Now

ReefLED 90 Adapter tray for Pendant/Max-S

The ReefLED 90 Adapter tray is designed by Red Sea for use with Pendant lighting systems. This adapter tray allows for easy installation and mounting of the ReefLED 90 lights in a sleek and stylish pendant that enhances their rimless aquariums. Its durable construction ensures a secure fit and provides a reliable solution for illuminating your underwater environment with high-quality LED lighting. These are used but are in excellent condition.

$20.00
See listingLexington, US
gravedoni1966
Feedback
100.0%Excellent· 59
View on eBayOpen listing →